Multithreading with C++ Causes Freezing and Restarts on MacBook Pro M3 Max
- Istvan Benedek
- Aug 25, 2024
- 7 min read
I recently tested multithreading in C++ on my new MacBook Pro M3 Max with 128 GB of memory, and unexpectedly, my MacBook restarted during the test. I ran the same code on Windows 11 (in parallel desktop), and surprisingly, Windows handled the code without any issues.
Let’s dive into the details. The code in question is a simple but resource-intensive program:
#include <iostream>
#include <thread>
#include <vector>
#include <random>
#include <numeric>
#include <mutex>
#include <condition_variable>
#include <string>
#include <format>
#include <fstream>
#include <iostream>
#include <chrono>
#include <cmath>
bool isPrime(int n, int primes[]) {
int s = int(sqrt(n)+1);
int i = 0;
while (primes[i]<s) {
if (n%primes[i]==0) {
return false;
}
i++;
}
return true;
}
int* get_primes(int max_items){
std::cout<< "get_primes before allocate" << std::endl;
int* primes = new int[max_items];
std::cout<< "get_primes after allocate" << std::endl;
primes[0]=2;
primes[1]=3;
int i = 2;
int n = primes[1] + 2;
while(i < max_items) {
if(isPrime(n, primes)) {
primes[i] = n;
i++;
}
n = n+2;
}
return primes;
}
int generate_random_number() {
static std::random_device rd;
static std::mt19937 gen(rd());
static std::uniform_int_distribution<> dis(1, 100);
get_primes(10000);
return dis(gen);
}
std::mutex mtx;
std::condition_variable cv;
bool ready = false;
void thread_function(int n, int &result) {
//std::cout << std::format("Thread {} started.",n) << std::endl;
// Wait until the main thread signals the start
std::unique_lock<std::mutex> lock(mtx);
cv.wait(lock, [] { return ready; });
// Generate the random number
result = generate_random_number();
std::cout << ".";
//std::cout << std::format("Thread {} ended.",n) << std::endl;
}
int main() {
std::cout<< "start" << std::endl;
const int num_threads = 9967;
std::vector<std::thread> threads;
std::cout<< "before allocate" << std::endl;
std::vector<int> results(num_threads);
std::cout<< "after allocate"<< std::endl;
// Start all threads, but they will wait for the signal to start
for (int i = 0; i < num_threads; ++i) {
threads.emplace_back(thread_function,i, std::ref(results[i]));
}
// Simulate some work in the main thread
std::this_thread::sleep_for(std::chrono::seconds(1));
// Signal all threads to start
{
std::lock_guard<std::mutex> lock(mtx);
ready = true;
}
cv.notify_all(); // Notify all waiting threads
// Wait for all threads to finish
for (auto &t : threads) {
t.join();
}
// Summarize the results
int sum = std::accumulate(results.begin(), results.end(), 0);
std::cout << "END. Sum of all random numbers: " << sum << std::endl;
return 0;
}Report:
panic(cpu 3 caller 0xfffffe001d3d5164): Spinlock[0xfffffe2acc97cfe8] timeout after 12583360 ticks; current owner: 0xfffffe2acdd4efb0 (on cpu 11), start time: 1195737728, now: 1208321088, timeout: 12582912 @locks.c:446
Debugger message: panic
Memory ID: 0xff
OS release type: User
OS version: 23G93
Kernel version: Darwin Kernel Version 23.6.0: Mon Jul 29 21:14:46 PDT 2024; root:xnu-10063.141.2~1/RELEASE_ARM64_T6031
Fileset Kernelcache UUID: A1F8A5FAE67F232E4626F002E5D56C68
Kernel UUID: 4C58F257-F9AE-3173-B7E1-3DFD20704A6E
Boot session UUID: 7EC9B5F6-39FA-4BD6-AC05-6DCA9444D2E8
iBoot version: iBoot-10151.140.19
secure boot?: YES
roots installed: 0
Paniclog version: 14
KernelCache slide: 0x0000000014de8000
KernelCache base: 0xfffffe001bdec000
Kernel slide: 0x0000000014df0000
Kernel text base: 0xfffffe001bdf4000
Kernel text exec slide: 0x000000001635c000
Kernel text exec base: 0xfffffe001d360000
mach_absolute_time: 0x497e855f
Epoch Time: sec usec
Boot : 0x66c9bd13 0x0005ec94
Sleep : 0x00000000 0x00000000
Wake : 0x00000000 0x00000000
Calendar: 0x66c9bd3d 0x000d114a
Zone info:
Zone map: 0xfffffe15fe1dc000 - 0xfffffe35fe1dc000
. VM : 0xfffffe15fe1dc000 - 0xfffffe1acaea8000
. RO : 0xfffffe1acaea8000 - 0xfffffe1c64840000
. GEN0 : 0xfffffe1c64840000 - 0xfffffe213150c000
. GEN1 : 0xfffffe213150c000 - 0xfffffe25fe1d8000
. GEN2 : 0xfffffe25fe1d8000 - 0xfffffe2acaea4000
. GEN3 : 0xfffffe2acaea4000 - 0xfffffe2f97b70000
. DATA : 0xfffffe2f97b70000 - 0xfffffe35fe1dc000
Metadata: 0xfffffe3c1f604000 - 0xfffffe3c27604000
Bitmaps : 0xfffffe3c27604000 - 0xfffffe3c37604000
Extra : 0 - 0
CORE 0 recently retired instr at 0xfffffe001d50f04c
CORE 1 recently retired instr at 0xfffffe001d50f04c
CORE 2 recently retired instr at 0xfffffe001d50f04c
CORE 3 recently retired instr at 0xfffffe001d50d918
CORE 4 recently retired instr at 0xfffffe001d50f04c
CORE 5 recently retired instr at 0xfffffe001d50f04c
CORE 6 recently retired instr at 0xfffffe001d50f04c
CORE 7 recently retired instr at 0xfffffe001d50f04c
CORE 8 recently retired instr at 0xfffffe001d50f04c
CORE 9 recently retired instr at 0xfffffe001d50f04c
CORE 10 recently retired instr at 0xfffffe001d50f04c
CORE 11 recently retired instr at 0xfffffe001d50f04c
CORE 12 recently retired instr at 0xfffffe001d50f04c
CORE 13 recently retired instr at 0xfffffe001d50f04c
CORE 14 recently retired instr at 0xfffffe001d50f04c
CORE 15 recently retired instr at 0xfffffe001d50f04c
TPIDRx_ELy = {1: 0xfffffe2acce16fb0 0: 0x0000000000000003 0ro: 0x000000030603b0e0 }
CORE 0 PVH locks held: None
CORE 1 PVH locks held: None
CORE 2 PVH locks held: None
CORE 3 PVH locks held: None
CORE 4 PVH locks held: None
CORE 5 PVH locks held: None
CORE 6 PVH locks held: None
CORE 7 PVH locks held: None
CORE 8 PVH locks held: None
CORE 9 PVH locks held: None
CORE 10 PVH locks held: None
CORE 11 PVH locks held: None
CORE 12 PVH locks held: None
CORE 13 PVH locks held: None
CORE 14 PVH locks held: None
CORE 15 PVH locks held: None
CORE 0: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe3608debd30
CORE 1: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a623d30
CORE 2: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a63bd30
CORE 3 is the one that panicked. Check the full backtrace for details.
CORE 4: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a8bbd30
CORE 5: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a58fd30
CORE 6: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a74fd30
CORE 7: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360983bd30
CORE 8: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a897d30
CORE 9: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe3608ccbd30
CORE 10: PC=0x0000000194bf73e0, LR=0x00000001004cab8c, FP=0x000000016fd11b20
CORE 11: PC=0xfffffe002064a4c0, LR=0xfffffe002064a478, FP=0xfffffe360a653dc0
CORE 12: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a683d30
CORE 13: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a813d30
CORE 14: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a453d30
CORE 15: PC=0xfffffe001d3d5528, LR=0xfffffe001d3d5500, FP=0xfffffe360a6bfd30
Compressor Info: 0% of compressed pages limit (OK) and 0% of segments limit (OK) with 0 swapfiles and OK swap space
Panicked task 0xfffffe2f9060ddb0: 10126 pages, 9968 threads: pid 1001: restart_macos
Panicked thread: 0xfffffe2acce16fb0, backtrace: 0xfffffe3609b8f660, tid: 10282
lr: 0xfffffe001d3b812c fp: 0xfffffe3609b8f6f0
lr: 0xfffffe001d505e18 fp: 0xfffffe3609b8f760
lr: 0xfffffe001d504278 fp: 0xfffffe3609b8f830
lr: 0xfffffe001d3678cc fp: 0xfffffe3609b8f840
lr: 0xfffffe001d3b7a20 fp: 0xfffffe3609b8fbf0
lr: 0xfffffe001dbc0600 fp: 0xfffffe3609b8fc10
lr: 0xfffffe001d3d5164 fp: 0xfffffe3609b8fc90
lr: 0xfffffe001d3d55b8 fp: 0xfffffe3609b8fd30
lr: 0xfffffe002064a464 fp: 0xfffffe3609b8fdc0
lr: 0xfffffe001d855240 fp: 0xfffffe3609b8fde0
lr: 0xfffffe001d9dc24c fp: 0xfffffe3609b8fe40
lr: 0xfffffe001d5043cc fp: 0xfffffe3609b8ff10
lr: 0xfffffe001d3678cc fp: 0xfffffe3609b8ff20
lr: 0xfffffe001d367894 fp: 0x0000000000000000
Kernel Extensions in backtrace:
com.apple.kec.pthread(1.0)[A8EBFCE3-3EAE-3BB4-B29D-28DFEB0689AA]@0xfffffe0020645ff0->0xfffffe002064bdf3
last started kext at 519126562: com.apple.filesystems.autofs 3.0 (addr 0xfffffe001c81c340, size 6069)
loaded kexts:
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleTopCaseHIDEventDriver 7440.8
com.apple.driver.CoreKDL 1
com.apple.driver.AppleBiometricServices 1
com.apple.driver.DiskImages.ReadWriteDiskImage 493.0.0
com.apple.driver.DiskImages.UDIFDiskImage 493.0.0
com.apple.driver.DiskImages.RAMBackingStore 493.0.0
com.apple.driver.DiskImages.FileBackingStore 493.0.0
com.apple.driver.BCMWLANFirmware4388.Hashstore 1
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleALSColorSensor 1.0.0d1
com.apple.driver.AppleUSBDeviceNCM 5.0.0
com.apple.driver.AppleThunderboltIP 4.0.3
com.apple.driver.AppleAOPVoiceTrigger 340.42
com.apple.driver.SEPHibernation 1
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.nke.l2tp 1.9
com.apple.filesystems.tmpfs 1
com.apple.driver.AppleSmartIO2 1
com.apple.AppleEmbeddedSimpleSPINORFlasher 1
com.apple.filesystems.nfs 1
com.apple.filesystems.lifs 1
com.apple.filesystems.apfs 2236.141.1
com.apple.IOTextEncryptionFamily 1.0.0
com.apple.filesystems.hfs.kext 650.140.2
com.apple.security.BootPolicy 1
com.apple.BootCache 40
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.driver.ApplePMP 1
com.apple.driver.AppleDPDisplayTCON 1
com.apple.driver.AppleM68Buttons 1.0.0d1
com.apple.driver.AppleProResHW 350.47.0
com.apple.driver.AppleJPEGDriver 6.6.2
com.apple.driver.ApplePMPFirmware 1
com.apple.driver.AppleAVE2 760.31.1
com.apple.driver.AppleAVD 743
com.apple.driver.AppleSamsungSerial 1.0.0d1
com.apple.driver.AppleMobileDispT603C-DCP 140.0
com.apple.AGXG15C 282.14
com.apple.driver.AppleSerialShim 1
com.apple.driver.AppleSDXC 3.5.2
com.apple.driver.AppleS5L8960XNCO 1
com.apple.driver.usb.AppleSynopsysUSB40XHCI 1
com.apple.driver.AppleTypeCRetimer 1.0.0
com.apple.driver.AppleCS42L84Audio 740.41
com.apple.driver.AppleSN012776Amp 740.41
com.apple.driver.AppleT6031CLPC 1
com.apple.driver.AppleT6031SOCTuner 1
com.apple.driver.AppleEventLogHandler 1
com.apple.driver.AppleT6031PMGR 1
com.apple.driver.AppleS8000AES 1
com.apple.driver.AppleS8000DWI 1.0.0d1
com.apple.driver.AppleInterruptControllerV3 1.0.0d1
com.apple.driver.AppleBluetoothModule 1
com.apple.driver.AppleBCMWLANBusInterfacePCIe 1
com.apple.driver.AppleS5L8920XPWM 1.0.0d1
com.apple.driver.AudioDMAController-T603x 350.2
com.apple.driver.AppleSPIMC 1
com.apple.driver.AppleS5L8940XI2C 1.0.0d2
com.apple.driver.AppleT8110DART 1
com.apple.driver.AppleH15MCD 1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.driver.usb.AppleUSBUserHCI 1
com.apple.iokit.IOKitRegistryCompatibility 1
com.apple.iokit.EndpointSecurity 1
com.apple.driver.AppleUIO 1
com.apple.driver.AppleDiskImages2 276.120.7
com.apple.AppleSystemPolicy 2.0.0
com.apple.nke.applicationfirewall 405
com.apple.kec.InvalidateHmac 1
com.apple.kec.AppleEncryptedArchive 1
com.apple.driver.driverkit.serial 6.0.0
com.apple.iokit.IOAVBFamily 1220.1
com.apple.driver.AppleHSBluetoothDriver 7440.8
com.apple.driver.IOBluetoothHIDDriver 9.0.0
com.apple.driver.AppleHIDKeyboard 7440.3
com.apple.driver.AppleActuatorDriver 7440.9
com.apple.driver.AppleMultitouchDriver 7440.9
com.apple.driver.AppleMesaSEPDriver 100.99
com.apple.iokit.IOBiometricFamily 1
com.apple.driver.DiskImages.KernelBacked 493.0.0
com.apple.driver.AppleXsanScheme 3
com.apple.driver.AppleConvergedIPCOLYBTControl 1
com.apple.driver.AppleConvergedPCI 1
com.apple.driver.AppleBluetoothDebug 1
com.apple.driver.AppleBTM 1.0.1
com.apple.driver.usb.networking 5.0.0
com.apple.driver.AppleAOPAudio 340.4
com.apple.driver.AppleTrustedAccessory 1
com.apple.iokit.AppleSEPGenericTransfer 1
com.apple.driver.AppleThunderboltUSBDownAdapter 1.0.4
com.apple.driver.AppleSEPHDCPManager 1.0.1
com.apple.driver.AppleThunderboltPCIDownAdapter 4.1.1
com.apple.driver.AppleThunderboltDPInAdapter 8.5.1
com.apple.driver.AppleThunderboltDPAdapterFamily 8.5.1
com.apple.nke.ppp 1.9
com.apple.driver.AppleDiagnosticDataAccessReadOnly 1.0.0
com.apple.iokit.IONVMeFamily 2.1.0
com.apple.driver.AppleNANDConfigAccess 1.0.0
com.apple.driver.AppleBSDKextStarter 3
com.apple.kext.triggers 1.0
com.apple.driver.IOHIDPowerSource 1
com.apple.driver.AppleCallbackPowerSource 1
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleSyntheticGameController 11.6.1
com.apple.AGXFirmwareKextG15CRTBuddy 1
com.apple.AGXFirmwareKextRTBuddy64 282.14
com.apple.plugin.IOgPTPPlugin 1240.15
com.apple.driver.AppleDCPDPTXProxy 1.0.0
com.apple.driver.DCPDPFamilyProxy 1
com.apple.driver.AppleHIDTransportFIFO 7440.1
com.apple.driver.AppleHIDTransport 7440.1
com.apple.driver.AppleSPU 1
com.apple.driver.AppleInputDeviceSupport 7440.1
com.apple.driver.AppleSART 1
com.apple.driver.ApplePTD 1.0.0
com.apple.iokit.IOMobileGraphicsFamily-DCP 343.0.0
com.apple.iokit.IOMobileGraphicsFamily 343.0.0
com.apple.driver.AppleM2ScalerCSCDriver 265.0.0
com.apple.iokit.IOGPUFamily 93.40.3
com.apple.driver.AppleDCP 1
com.apple.driver.DCPAVFamilyProxy 1
com.apple.driver.AppleFirmwareKit 1
com.apple.driver.AppleMobileApNonce 1
com.apple.driver.AppleHPM 3.4.4
com.apple.driver.AppleSPMIPMU 1.0.1
com.apple.driver.AppleDialogPMU 1.0.1
com.apple.driver.AppleUSBXDCIARM 1.0
com.apple.driver.AppleUSBXDCI 1.0
com.apple.iokit.IOUSBDeviceFamily 2.0.0
com.apple.driver.usb.AppleSynopsysUSBXHCI 1
com.apple.driver.usb.AppleUSBXHCI 1.2
com.apple.driver.AppleEmbeddedUSBHost 1
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.driver.AppleT8122TypeCPhy 1
com.apple.driver.AppleStockholmControl 1.0.0
com.apple.driver.AppleSPMI 1.0.1
com.apple.driver.AppleCSEmbeddedAudio 740.41
com.apple.driver.AppleEmbeddedAudio 740.41
com.apple.iokit.AppleARMIISAudio 340.16
com.apple.driver.IISAudioIsolatedStreamECProxy 340.16
com.apple.driver.ExclavesAudioKext 1
com.apple.driver.ApplePassthroughPPM 3.0
com.apple.driver.ApplePMGR 1
com.apple.driver.AppleARMWatchdogTimer 1
com.apple.driver.AppleDisplayCrossbar 1.0.0
com.apple.iokit.IODisplayPortFamily 1.0.0
com.apple.driver.AppleTypeCPhy 1
com.apple.driver.AppleMultiFunctionManager 1
com.apple.driver.AppleBluetoothDebugService 1
com.apple.driver.AppleBCMWLANCore 1.0.0
com.apple.iokit.IO80211Family 1200.13.0
com.apple.driver.IOImageLoader 1.0.0
com.apple.driver.AppleOLYHAL 1
com.apple.driver.corecapture 1.0.4
com.apple.driver.AppleA7IOP-MXWrap-v1 1.0.2
com.apple.driver.AppleThunderboltNHI 7.2.81
com.apple.driver.AppleT8122PCIeC 1
com.apple.iokit.IOThunderboltFamily 9.3.3
com.apple.iokit.IOPortFamily 1.0
com.apple.driver.ApplePIODMA 1
com.apple.driver.AppleT6031PCIe 1
com.apple.driver.AppleEmbeddedPCIE 1
com.apple.driver.AppleMCA2-T603x 840.3
com.apple.driver.AppleEmbeddedAudioLibs 340.8
com.apple.driver.AppleFirmwareUpdateKext 1
com.apple.driver.AppleH13CameraInterface 8.701.0
com.apple.driver.AppleGPIOICController 1.0.2
com.apple.driver.AppleA7IOP-ASCWrap-v6 1.0.2
com.apple.driver.AppleDockChannel 1
com.apple.driver.AppleEverestErrorHandler 1
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.iokit.IOTimeSyncFamily 1240.15
com.apple.driver.DiskImages 493.0.0
com.apple.iokit.IOGraphicsFamily 598
com.apple.iokit.IOBluetoothFamily 9.0.0
com.apple.driver.AppleT6031ANEHAL 7.453.0
com.apple.driver.AppleSSE 1.0
com.apple.driver.AppleSEPKeyStore 2
com.apple.driver.AppleUSBTDM 556
com.apple.iokit.IOUSBMassStorageDriver 245
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOUSBHostFamily 1.2
com.apple.driver.AppleUSBHostMergeProperties 1.2
com.apple.driver.usb.AppleUSBCommon 1.0
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.RTBuddy 1.0.0
com.apple.driver.AppleEmbeddedTempSensor 1.0.0
com.apple.driver.AppleARMPMU 1.0
com.apple.iokit.IOAccessoryManager 1.0.0
com.apple.driver.AppleOnboardSerial 1.0
com.apple.iokit.IOSerialFamily 11
com.apple.iokit.IOSCSIBlockCommandsDevice 495
com.apple.iokit.IOSCSIArchitectureModelFamily 495
com.apple.driver.AppleRSMChannel 1
com.apple.iokit.IORSMFamily 1
com.apple.driver.AppleLockdownMode 1
com.apple.driver.AppleIPAppender 1.0
com.apple.iokit.IOSkywalkFamily 1.0
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IONetworkingFamily 3.4
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.AppleSEPManager 1.0.1
com.apple.driver.AppleA7IOP 1.0.2
com.apple.driver.IOSlaveProcessor 1
com.apple.driver.AppleBiometricSensor 2
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.driver.AppleANELoadBalancer 7.453.0
com.apple.driver.AppleH11ANEInterface 7.453.0
com.apple.driver.IODARTFamily 1
com.apple.AUC 1.0
com.apple.iokit.IOSurface 352.50.1
com.apple.iokit.IOAVFamily 1.0.0
com.apple.iokit.IOHDCPFamily 1.0.0
com.apple.iokit.IOCECFamily 1
com.apple.iokit.IOAudio2Family 1.0
com.apple.driver.AppleIISController 340.1
com.apple.driver.AppleAudioClockLibs 340.8
com.apple.driver.FairPlayIOKit 71.10.0
com.apple.driver.AppleARMPlatform 1.0.2
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.iokit.IOReportFamily 47
com.apple.security.quarantine 4
com.apple.security.sandbox 300.0
com.apple.iokit.IOStorageFamily 2.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.iokit.CoreAnalyticsFamily 1
com.apple.security.AppleImage4 6.3.0
com.apple.kext.CoreTrust 1
com.apple.iokit.IOCryptoAcceleratorFamily 1.0.1
com.apple.kec.pthread 1
com.apple.kec.Libm 1
com.apple.kec.Compression 1.0
com.apple.kec.corecrypto 14.0
** Stackshot Incomplete ** Bytes Filled 1477260 **The code essentially burns through system resources by creating a large number of threads, each performing the same task. These threads are started simultaneously, and the program waits for their completion to compute a sum. The most demanding part of the code is the generate_random_number() method, which not only generates random numbers but also has a side effect — it produces the first 10,000 prime numbers. This method is invoked by every thread, increasing resource utilization and ensuring that each thread runs longer than just a few milliseconds.
Initially, I created 10,000 threads, which led to an immediate freeze and a restart of my MacBook. I then experimented with the number of threads and discovered that the application did not trigger a restart when running 9,945 threads in the first attempt. However, when I started the compiled application from the command line, I observed inconsistent behavior. Sometimes, I could run the code two or three times in a row without any issues, but eventually, the system would restart without exception.
I’ve been using my MacBook Pro M3 Max for over eight months, but I’m beginning to see its limitations and shortcomings.
Problems Encountered (so far):
Compatibility Issues: I recently purchased an RTX 4090 eGPU (Gigabyte Gaming Box with RTX 4090) for CUDA programming, only to find that it is entirely incompatible with MacBooks that use Apple Silicon processors. Parallels Desktop does not support having an eGPU attached to the Thunderbolt port, which forced me to buy a Windows 11 desktop machine (Asus ROG Maximus Dark Hero Z790, Intel Core i9–14900K CPU with water cooling, 92 GB DDR5 6400 MHz RAM, 2 TB M.2 SSD Samsung Evo 990, Asus TUF G502, ca. 2500 EUR). I use Synergy to avoid cluttering my desk with extra mice and keyboards.
Thunderbolt 4 Incompatibility: There is no straightforward Thunderbolt 4 connection between Windows 11 and the MacBook Pro. Recently, I found a paid application that might address this, but so far, there is no free and simple solution to my knowledge.
MacOS Sonoma Instability: My simple C++ code consistently crashes MacOS Sonoma, leading to an instant system restart.
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